login
A012560
sinh(sinh(x)*arctan(x))=2/2!*x^2-4/4!*x^4+230/6!*x^6-7880/8!*x^8...
0
2, -4, 230, -7880, 680458, -77968460, 12944005230, -2852439671952, 810954585734418, -288565474593329044, 125662055644822916342, -65733137963856533872984, 40670869816508001470654746
OFFSET
0,1
CROSSREFS
Sequence in context: A018720 A012666 A012612 * A012556 A329418 A018729
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved